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Conductors and Insulators: Light the Bulb with Lumi

Conductors and Insulators: Light the Bulb with Lumi

Learn which materials are conductors and insulators and why metals conduct, by testing everyday objects in a circuit to see if the bulb lights.

Chapter 1: Conductors and insulators: which materials let electricity flow?
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What you'll learn

  • A conductor lets electricity flow; an insulator stops it
  • How to test a material by putting it in a circuit gap
  • Metals such as copper, iron and steel are good conductors
  • Plastic, wood, rubber, glass and fabric are common insulators
  • Shiny or hard does not mean a material conducts
  • Why wires have copper inside and a plastic coat outside

Chapter by chapter

  1. Conductors and insulators: which materials let electricity flow? Free to try

    Year 4 science · 1

  2. Testing materials in a circuit: is it a conductor or an insulator?

    Year 4 science · 1

  3. Metals are good conductors: copper, iron, steel and more

    Year 4 science · 1

  4. Common conductors and insulators at home: plastic, wood, rubber, glass and fabric

    Year 4 science · 1

  5. Conductors and insulators in wires and plugs

    Year 4 science · 1

  6. Bright Spark Challenge (10 questions) (10 questions)

See every Science chapter in the chapter library

What the chapters cover in the national curriculum in England:

  1. Year 4 science: Recognise some common conductors and insulators, and associate metals with being good conductors

About this adventure

Conductors and Insulators is an interactive science game that teaches children aged 7–10 which materials let electricity flow through them and why metals are good conductors. It follows the Year 4 electricity curriculum for England.

Lumi the firefly runs a light lab with a simple circuit: a battery, wires, a bulb and a gap between two crocodile clips. Children drag keys, spoons, foil, rubber, glass and more into the gap. If the bulb lights, the material is a conductor; if it stays dark, it is an insulator. They predict before each test and record the results in a table.

Tricky cases check real understanding: a shiny bead that turns out to be plastic, spoons of the same shape made of different materials, and a plastic-coated paper clip. Spoken narration, short quick checks and a 10-question challenge round it off.

Questions and answers

What is the difference between a conductor and an insulator?

A conductor is a material that lets electricity flow through it, and an insulator is a material that stops electricity flowing. In a simple circuit, a conductor placed across a gap makes the bulb light, while an insulator leaves it dark.

Why are metals good conductors of electricity?

Metals are good conductors because electricity can flow through them easily, so copper, iron, steel and aluminium all light a bulb in a circuit. That is why the wires inside cables are made of copper.

What are some common insulators at home?

Plastic, wood, rubber, glass and fabric are common insulators found around the home. A plastic cup, a wooden spoon, a rubber duck, a glass jar and a woolly sock will all stop electricity flowing through them.

What age is this conductors and insulators game for?

The game is designed for children aged 7 to 10. It matches the Year 4 electricity unit of the national curriculum in England, and narration reads every line aloud for younger or less confident readers.

What does the game include and how long does it take?

The game includes a short warm-up on circuits, five lab stations with hands-on tests and quick checks, and a 10-question final challenge. Playing everything takes about 40 minutes, and children can start at any station.

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